fix: harden payment provider handling

src/infrastructure/cloud_kassir/client.py

@@ -147,5 +147,5 @@ class ClaudeKassirClient(IReceipt):
                     return body
         except ApplicationException:
             raise
-        except aiohttp.ClientError:
+        except (TimeoutError,aiohttp.ClientError):
             raise ReceiptProviderException(message='Receipt provider unreachable')